Beleaguered Yankee general partner Steve Swindal showed up for work at Legends Field in Tampa yesterday under the impression he’d keep his high-powered job – despite the implosion of his marriage to The Boss’ daughter.

“I’ve been here 10 years and I am anticipating staying with the club,” the sanguine Steinbrenner son-in-law said by phone from his fourth-floor office in the Bronx Bombers’ spring-training compound.

“I think I don’t want to speculate on anything,” Swindal, 52, said of the implications of his impending divorce from wife Jennifer Steinbrenner, 47, who filed the papers Tuesday.

Asserting his desire to continue to remain part of the Yankee family, he noted: “I am employed presently. I am going about my business of helping to run a baseball team.”

“Opening Day is coming and there’s a lot to do.”

Swindal admitted the situation is “awkward.” Understandably so, because Steinbrenner and three other family members – all except Jennifer – have offices on the same floor as their soon-to-be-ex-brother-in-law.

Swindal – once considered to be his dad-in-law’s heir apparent – said he had not spoken to George Steinbrenner in the last week. Meanwhile, it emerged that Swindal’s humiliating Feb. 15 drunken driving arrest came just hours after Jennifer broke up with him and booted him out of their $2.3 million Tampa home.

In her divorce papers, Jennifer Steinbrenner revealed the couple separated on Valentine’s Day.

A police report shows that Swindal was pulled over at 2:12 a.m. the next day by a Florida cop after he cut off the officer’s cruiser in traffic.

Swindal – who was weaving, and doing 61 mph in a 35-mph zone – refused a Breathalyzer test and failed a field sobriety test. He was arrested for driving under the influence and spent the night in the slammer, according to police.

Though the Swindals issued a statement earlier this week saying their split is amicable, Jennifer Steinbrenner’s divorce papers – which claim the marriage is “irretrievably broken” – indicate it could get nasty.

She has asked for: their swanky house, an “equitable distribution” of their marital assets (partly paid in the form of “lump-sum” alimony and/or spousal support) and that her interests in the Steinbrenner family businesses and trusts be “protected and set aside” from Swindal.

Jennifer Steinbrenner could not be reached, and her lawyer did not return calls.